Roller shutters are a type of door or window shutter consisting of many horizontal slats (or sometimes bars or web systems) hinged together. The door is raised to open it and lowered to close it. On large doors, the action may be motorized. It provides protection against wind and rain. In shutter form, it is used in front of a window and protects the window from vandalism and burglary attempts.
Roller shutters have many applications, including doors for vans, garages, kitchens, schools, prisons and warehouses. In some parts of the world, roller shutters are subsidized by local governments  due to the inherent security benefits. In areas that are frequently exposed to inclement weather, roller shutters are used as a method of insulation and can protect windows against hail damage.
Xpanda has been manufacturing roller shutter doors since 1974. These security barriers are manufactured to the highest standard, and like all Xpanda products, are recommended by the police and the insurance industry as key to keeping criminals behind bars.
Roller shutters refer to doors constructed from various slat material rolled up in a roll above the door opening. For ease of operation the doors are balanced by means of tortion springs.
Roller shutters are categorised according to:
1. Slat material
2. Operating mechanism
3. Spring location
a. Outside barrel (doors < 25 m2)
b. Inside barrel (large doors & grille doors)